Engine.



No. 798,817. PATENTED SEPT. 5, 1905. R. P. MOODIE.

ENGINE.

APPLIOATION FILED 3.23, 1904.

2 SHEETS-SHEET -1.

Kg. Z 36 WITNESSES.

H I WE m MG PE R APPLICATION FILED APILBS, 1904.

2 SHEETS-SHEET 2.

IIVVENTOR fiaerfZJ/aade ATTORNEYS WITNESSES.

UNITED STATETES PATENT OFFICE.

ROBERT 1. MOODIE, OF RENFRElY, CANADA, ASSIHYOR OF ONE-HALF TO JAMES E.H. BARNET, OF .ltICil RlC\\", ONTARIO, LLANAUA.

ENGINE.

Specification of Letters Patent.

Patented Sept. 5, 1905.

To all w/m'm, it nut concern.-

Be it known that I, ROBERT P. Mooniu, a subject of the King of GreatBritain, and a resident of Rent'rew, in the Province of Ontario andDominion of Canada, have invented a new and Improved Engine, of whichthe following is a full, clear, and exact description.

This invention relates particularly to a novel mechanism for startingengines. It is especially adapted to single-acting engines, such as theusual internal-combustion machines.

According to the embodiment of the invention here shown the engine isarranged to have the motive force act against one face of the piston inthe usual manner. At the opposite end of the cylinder, however, the rodis passed through a stutling-box or its equivalent, and this end of thecylinder is employed at times as a compressor and at other times as apower-cylinder to start the engine, these operations being controlled bya peculiarlyarranged valve. In this manner the engine when running maybe made to compress air or other elastic fluid, which may be stored andat some other time employed to start the engine upon a second or furtheroperation thereof.

The invention resides in certain novel features of structure andorganization, which will be hereinafter fully set forth.

Reference is had to the accompanying drawings, which represent anembodiment of the invention in which it is applied to a singleactingtwo-cylinder internal-combustion engine, in which drawings likecharacters of reference indicate corresponding parts in all the views,and in which Figure l is a side elevation of the engine. Fig. 9. is aplan view thereof with parts broken away and showing also thecompressing and starting valve casing in section. Fig. 3 is alongitudinal section taken through one of the cylinders of the engine.Fig. sis a cross-section on the line 4 4: of Fig. 3. Fig. 5 is across-section on essentially the same line, showing the parts in anotherposition; and Fig. 6 is a detail view of the starting and compressingvalve.

10 indicates the cylinders of the engine, ll the pistons, and 12thepiston-rods. The cylinders are provided at or adjacent to the heads Hwith the usual valve devices 15, and in this respect the engine mayoperate in any usual or desired manner.

At the heads 150i the cylinders stufiingboxes 16 are arranged, andthrough these boxes the piston-rods pass to their connection with thecrankshaft. At the ends of the cylinders adjaccnt to the heads 15 thecompressing and starting operations are performed. Suitably arranged onthe cylinders and extending across the same adjacent to the heads 15 isa valve casing or chest 17, which has ports 18 therein,respectivelycommunicating with the cylinders 10, and a port 19,communicating with an exhaust-passage 9.0, the port 19 being locatedintermediate the ports 18, as shown best in Fig. 2. The valve-casing 17is also provided at its right-hand end with an outwardly-openingcheck-valve 21 and an inwardly-opening check-valve 21. The check-valve21 admits air into the engine to be compressed, and the check-valve 2icarries oil' the compressed air to a pipe 22, which leads to a pipe 23,passing to a reservoir 2i. (See 5.) 25 indicates a check-valve in thepipe 22, acting to prevent the return of pressure to the valve 21.. Thepipe 23 passes beyond the branch .22 and enters the valvecasing l? atapproximately the middle thereof. Said pipe 23 is provided with athrottlevalve 26 at a point between the valve-casing and the branch pipe22.

Operating within the valve-casing 17 is a combined rocking andreciprocal valve 27. This valve is cyliudric in form and is provided atits upper side, at approximately its middle, with a cavity 28, intendedat all times to register with the pipe 23. From said cavity spiralgrooves 29 pass, respectively, toward the ends of the valve and downwardto the under side thereof. The valve is also formed in its under sidewith two grooves 30, disposed longitudinally of the valve, as shown inFig. 6 The valve 27 has a stem 31, to which is connected any desiredmechanism, an example of which is indicated at 32, for imparting acontinuous rocking movement to the valve. The valve-stem is alsoconnected with a lever 33, whereby manually to reciprocate the valve.

The valve is moved reciprocally from the position shown in Fig. i tothat shown in Fig. \Vhen the valve is thrown over to the right, as inFig. c, and assumingthat pressure is stored in the reservoir 2%, theengine may be started by this pressure. In this event the ports 29 ot'the valve lead from the pipe 23 respectively into transverse line withthe ports 18, and the ports 29 cover, respectively,

the distance between the ports 18 ELDdhhfifii'" haust-port 19.Consequently when the valve 27 is rocked the ports 29 are alternatelyconnected with the ports 18, and when one of the ports 29 is incommunication with its port 18 the opposite port 30 is in communicationwitlL the opposite port 18, placing the same in communication with theexhaust 19. Therefore When pressure is turned on by opening the throttle26 the pressure will passinto the ev l inders 10 and start the action ofthe engine. After the engine has been started the throttlevalve 26should be closed, and then the pistons will run idly in the cylindersadjacent to the heads 15, the valve 27 continually rocking, however, toopen communication between said ends of the cylinders and the exhaust 19to prevent compression therein. If it be desired to compress air withinthe reservoir 24 after the engine has been started, the valve 27 shouldbe thrown over to its leftward position. (Shown in Fig. 5.) Theleft-hand port 30 of said valve will then periodically connect theleft-hand cylinder with the exhaust 19, so as to allow the piston ofthis cylinder to run idly without compression in the end thereofadjacent to the head 1a. The corresponding end of the right-handcylinder 10 will, however, be cut off from the exhaust, and this end ofthe cylinder will then act as a compressor, the air being admittedthrough the valve 21 and expelled through the valve 21. It thereforefollows in this arrangement that the pressure may be maintained in thereservoir 24 at all times and the engine started by this pressureWhenever desired, these results being attained by the manipulation ofthe valve 27 under the action of the lever 33, the valve at all timesrocking under the action of the devices 32, whereby to bring about thenecessary coaction of the ports 18, 19, 29, and 30.

The cylinders 10 are provided with jackets 34:, which communicate witheach other according to the structure here shown and which incloseradiating ribs 35, suitably formed on the cylinder-walls. Said jacketsare provided with inlet and outlet openings 36, and through theseopenings a current of air may be continually blown to keep the cylinderscool. This current of air may be taken from the reservoir 24 or from anyother desired source, and in case the engine is adapted to aselfpropelled vehicle the hot air passing from the jackets 34 may be runinto a radiator in said vehicle to warm the interior thereof. 7

Since the foregoing description is of but a preferred embodiment of myinvention, I desire it understood that various changes in the details ofthe apparatus may be resorted to without in any way departing from thespirit of my invention as expressed in the claims.

as new and desire to secure by Letters Patent 1-.-An-engine comprisingthe combination with a cylinder and piston, of a valve-casingcommunicating with the cylinder,an inwardlyopening valve commanding anopening in the valve-casing, an outwardly-opening valve commandingasecond opening in the valvecasing, a pressure-reservoir communicatingwith the second valve, means establishing communication between thepressure-reservoir and a third opening in the valve-casing at a pointremoved from the two valves first named, a third valve operating in theValvecasing, and means for operating the third valve, said valve beingshiftable to establish communication between the two first-named valvesand the cylinder, or to close the said communicationand establishcommunication between the third opening in the valve-casing and thecylinder.

2. The combination with two cylinders and pistons therein, of avalve-casing communicating with said cylinders, a pressure-reservoir,means establishing communication between the pressure-reservoir and anintermediately-situated opening in the valve-casing, two valvescommanding openings in one end of the valve-casing, one valve openinginwardly and the other opening outwardly, means establishingcommunication between the outwardly-opening valve and thepressure-reservoir, a third valve operating within the valve-casing, andmeans for actuating the tlllICl'VLlVB, said third valve being shiftableso as to distribute the pressure from the said intermediately-situatedopening in the valvecasing to the two cylinders, or to closecommunication between said cylinders and said intermediately-situatedopening and to open communication between the two first-named valves andone of the cylinders.

3. The combination with two cylinders and pistons operating therein, ofa valve-casing communicating with the cylinders, a pressurereservoircommunicating with the valve-casing intermediate its ends, inlet andoutlet valves commanding orifices in one end portion of thevalve-casing, means establishing communication between the outlet-valveand the pressure-reservoir, and a valve operating in the casing andcapable of connecting the pressure-reservoir with the cylinders todistribute the pressure therein and operate the pistons, or of moving todisconnect one of the cylinders and connect the other cylinder with theend of the valve-casing having the said the operation of the last-namedcylinder as a compressor.

1. The combination with two cylinders and pistons Working therein, of avalve-casing communicating with the cylinder, a pressurereservoir, meansestablishing communication Having thus described my invention, I claimbetween the pressure-reservoir and an inter inlet' and outlet valves,whereby to permit- I0 to another position to cut off the cylinders fromone orifice and connect one of the cylinders With said inlet and outletvalves.

In testimony whereof I have signed my name to this specification in thepresence of twosubscribing Witnesses.

ROBERT P. MOO DIE.

\Vitnesses:

J. E. H. BARNET, Holmom M. SANFORD.

